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I’ve been looking for a while now to find a way to switch between multiple audio sources and output them on my speaker system.

Finally, I decided that the simple way is the best way :), so there’s what I came up with.

This is a 3P4T switch with four 3.5mm stereo female audio jacks acting as input and a 3.5mm stereo female audio jack that outputs the selected channel to the speakers. The knob points to the channel that is selected. Audio sources in this photo is my main PC and a Media laptop used for watching videos. There’s still two unused inputs left for connecting my phone/tablet/etc.

Now some photos from the build process:

I’ve spend approx. 100 DKK (17.5USD) for the parts (box, switch, knob, audio cable) that I did not have in my spare parts bin, but also had lots of fun building it, so, to my mind, it was worth the price.